I don't like such kind of people on DA who give faves for everyone they see. I think it's a foolish way to attract attention for their persons. Or why do they do this? Maybe, I don't understand something important Oo I'll be glad if someone explain me this thing

Those people are annoying too. They are just spammers, kind of like the "Get Free Followers" people on instagram. It saddens me that people care about followers that much. Sure its fun to have a lot of followers but it's definitely not important in life.